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1519-1521

The Fall of Tenochtitlan

Cortés had 500 soldiers. Tenochtitlan had 300,000 people. Smallpox decided the math.

Diego Rivera, Public domain, via Wikimedia Commons

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Five hundred Spaniards took an empire of millions. That is the sentence, and it has never added up.

At the siege that ended it, the Spanish force was maybe nine hundred men. Standing with them were somewhere between seventy five thousand and two hundred thousand indigenous soldiers, who had their own reasons, their own commanders, and their own terms.

And the other half of the story, the one about a king who mistook a Spanish captain for a returning god and handed over his empire, does not appear in a single Nahuatl source written before the conquest. It was assembled afterwards, to explain something that otherwise needed explaining.

Scene 1No way home

August, fifteen nineteen. On the coast at Veracruz, Hernan Cortes destroys his own ships. Burned or scuttled, the accounts differ. The effect is that five hundred men, sixteen horses and a few cannon cannot leave.

They march inland toward a city none of them has seen, on reports from coastal people who say it is bigger than anything in Spain.

It was. Tenochtitlan sat on an island in a lake, joined to the shore by three causeways, with somewhere between two and three hundred thousand people in it. Seville, the largest city in Spain, had sixty thousand.

One of the soldiers, Bernal Diaz, wrote his account almost fifty years later, as an old man, and he could still recall arriving at the edge of it.

Bernal Diaz del Castillo · The True History of the Conquest of New Spain · 1568

“We were amazed and said that it was like the enchantments they tell of in the legend of Amadis, on account of the great towers and temples and buildings rising from the water, and all built of masonry.”

Scene 2The people who fought him first

On the way, in September, the Spaniards enter the territory of Tlaxcala, and the Tlaxcalans attack them. Four battles in two weeks.

Then the Tlaxcalan senate does something else. It stops, and it negotiates.

This is not naivety and it is not awe. Tlaxcala had been at war with the Aztec alliance for decades, blockaded out of salt and cotton and cacao, and bled by ritual wars whose purpose was to take its people for sacrifice.

Their leading general argued for fighting on and was overruled. The senate decided that these strangers were the instrument that could end the thing strangling them.

From that point the army marching on Tenochtitlan is overwhelmingly Tlaxcalan.

Scene 3The eighth of November

Moctezuma receives Cortes on the southern causeway and takes him into the city as a guest.

What was happening in that meeting is contested by every source that describes it. The Spanish version has Moctezuma conceding his empire on the spot.

The likelier reading is that he was buying time. He housed them in a palace, fed them, watched them, and tried to work out what they were and how many more were coming.

Scene 4The festival

In June fifteen twenty, Cortes leaves the city to deal with a Spanish force sent to arrest him, because he is operating without authorisation and the governor of Cuba wants him in chains.

The officer he leaves in command attacks a religious festival and kills the Aztec nobility attending it.

The city rises. Moctezuma dies, by Spanish hands or by stones thrown from his own people depending on which account you read.

On the thirtieth of June the Spaniards fight their way out along a causeway at night, losing six hundred of their own men and a great many allies. They called it the night of sorrows.

This is how Nahua informants, decades later, described what the newcomers were like around gold.

Anonymous Nahua informants · Florentine Codex · c. 1577

“They seized the gold as if they were monkeys, their faces flushed. Like hungry pigs they craved that gold.”

Rivera's mural depicts the great market of Tlatelolco before the conquest (60,000 people trading daily, a larger marketplace than any in Europe). The mural was painted between 1929 and 1945.
Rivera's mural depicts the great market of Tlatelolco before the conquest (60,000 people trading daily, a larger marketplace than any in Europe). The mural was painted between 1929 and 1945.Diego Rivera, Public domain, via Wikimedia Commons (1945)

Scene 5What actually took the city

They came back the following year with more allies and a fleet of small ships built in pieces and carried over the mountains, and they cut the causeways and the fresh water.

But the thing that decided it had already arrived. Smallpox came ashore with the expedition sent to arrest Cortes, carried by an enslaved African man in its ranks, and it went through Tenochtitlan between October and January.

It killed the emperor who had replaced Moctezuma, eighty days into his reign. It killed commanders, priests, and the people who knew how the city was run, in the months when the city most needed them.

The siege lasted about three months. More than two hundred and forty thousand people died in it.

Bernal Diaz again, on the end of it.

Bernal Diaz del Castillo · The True History of the Conquest of New Spain · 1568

“The people of the city had to walk upon their dead while others swam or drowned in the waters of that wide lake. So great was the suffering that it was beyond understanding.”

Nahua illustration from Sahagún's codex depicting the Spanish siege with brigantines on Lake Texcoco and indigenous warriors defending the causeways.
Nahua illustration from Sahagún's codex depicting the Spanish siege with brigantines on Lake Texcoco and indigenous warriors defending the causeways.Unknown author, Public domain, via Wikimedia Commons (1577)

Five accounts

Five accounts of two years.

  1. The conquistadors
  2. The Mexica
  3. Tlaxcala
  4. The Catholic mission
  5. Modern Mexico
The excavated foundations of the Aztec Templo Mayor, discovered in 1978 beneath downtown Mexico City. The Metropolitan Cathedral, built from stones of the destroyed temple, is visible in the background.
The excavated foundations of the Aztec Templo Mayor, discovered in 1978 beneath downtown Mexico City. The Metropolitan Cathedral, built from stones of the destroyed temple, is visible in the background.No machine-readable author provided. RobAn~commonswiki assumed (based on copyright claims)., Public domain, via Wikimedia Commons (2008)

The turn

What each account has to leave out.

  1. Spanish Conquistador

    The conquistadors' account leaves out the size of the army it commanded. Five hundred is the number of Spaniards, not the number of soldiers, and the god story does the work of explaining a victory the arithmetic will not.

    From the record
    Indigenous allies who constituted the vast majority of the conquering army
    Epidemic disease as the decisive factor in demographic collapse
    Destruction of Aztec libraries, codices, and cultural heritage
    Economic motivations, gold and encomienda labor, driving the expedition
  2. Aztec / Mexica

    The Mexica account is a translation twice over: collected decades late, through a friar, from people living under the people who beat them. It is the only version of their side that exists, and its conditions are written into every page.

    From the record
    Aztec imperial practices (tribute extraction, human sacrifice) that alienated subject peoples
    Tlaxcalan and other indigenous agency in choosing alliance with Spain
    Internal divisions within the Aztec Triple Alliance
    Post-conquest Nahua adaptation and cultural survival strategies
  3. Tlaxcalan / Indigenous Ally

    The Tlaxcalan account is right that they chose, and it is quieter about the fact that the choice was made by a state under blockade by an empire that took its people for sacrifice. A decision under those conditions is still a decision, and it is not a free one.

    From the record
    Devastation suffered by all indigenous peoples including Tlaxcalans from European diseases
    Tlaxcalan participation in violence against other indigenous groups during and after conquest
    Long-term consequences of enabling European colonization
    Internal Tlaxcalan debate and divisions over the alliance
  4. Catholic Mission

    The friars' account is unusable as a moral position and indispensable as a source, and it cannot hold both of those at once.

    From the record
    Mass destruction of codices, temples, and religious objects by the same missions
    Forced conversion and the erasure of indigenous spiritual practices
    The role of mission schools in cultural assimilation and colonial control
    Diego de Landa's destruction of Maya codices, the most catastrophic cultural loss in the Americas
  5. Modern Mexican Identity

    And the modern account is a national identity assembled out of ruins. It puts the sun stone at the centre of the national museum and it has never settled what to do with the Tlaxcalans, or with the woman who translated for Cortes, who is a traitor and a mother of a nation in the same breath.

    From the record
    Spanish colonial contributions to Mexican culture, architecture, and law
    Agency of indigenous peoples in shaping post-conquest society
    Regional diversity of indigenous experience beyond the Aztec-centric narrative
    Economic and political factors beyond ethnic identity in shaping modern inequality

Close

The city fell on the thirteenth of August, fifteen twenty one.

Within a century, the population of central Mexico had gone from about twenty five million people to about one million. Most of that was disease, and disease is not a policy, and the conquest is what put it into a population with no immunity to any of it.

Mexico City was built directly on top of the wreckage, using its stone.

And in nineteen seventy eight, electrical workers digging behind that cathedral hit another carved stone. It was the great temple. It had been eight feet under the traffic the entire time.

The record

By the numbers

Span
1519April 1519
Killed
240K+ during the siege alone; indigenous population of…
Displaced
25Mindigenous people in Mesoamerica
Place
Mexico

Key figures

  • Hernán CortésLeader of the Spanish expedition, self-appointed captain-general1485 to 1547
  • Moctezuma IITlatoani (ruler) of the Aztec Triple Alliance at Spanish arrival1466 to 1520
  • CuauhtémocLast Aztec tlatoani, led 80-day defense of Tenochtitlan, executed by Cortés in 15251497 to 1525
  • La Malinche (Doña Marina)Nahua translator and advisor to Cortés, mother of one of the first mestizo children1500 to 1529
  • Pedro de AlvaradoSpanish lieutenant, perpetrated the Toxcatl massacre1485 to 1541
  • Xicoténcatl the YoungerTlaxcalan military commander who opposed the alliance with Cortés1484 to 1521

Primary sources

Bernal Díaz del Castillo · The True History of the Conquest of New Spain · 1568

“We were amazed and said that it was like the enchantments they tell of in the legend of Amadís, on account of the great towers and temples and buildings rising from the water, and all built of masonry.”

Bernal Díaz del Castillo · The True History of the Conquest of New Spain · 1568

“The people of the city had to walk upon their dead while others swam or drowned in the waters of that wide lake. So great was the suffering that it was beyond understanding.”

Anonymous Nahua informants · Florentine Codex, Book XII (recorded by Fray Bernardino de Sahagún) · c. 1577

“They seized the gold as if they were monkeys, their faces flushed. Like hungry pigs they craved that gold.”